Grindr allows gay and bisexual men to meet up with like-minded men nearby. Profile creation is a fairly minimal experience, focusing on a profile pic, user name, and a few simple questions, and choosing a "Tribe" that describes your type, and then you're up finding other users and chatting them up in minutes.
The app is strongly hook-up focused, connecting you to profiles that are in the closest proximity to you. If your goal is to meet up with someone conveniently and quickly, then Grindr is the best dating app for you.
Grindr is free to use and advertisement-supported, but the premium version, Grindr Xtra, offers ad-free browsing in addition to other features like adding multiple Tribes and advanced search filters. One notable downside? Unlike other dating apps, push notifications for messages require Grindr Xtra.